Perhaps you should try some spelling variations:
"using java caicode snippets" » "using java code snippets", "using data caicode snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung con bo snippets" » "dung con code snippets", "dung cong bo snippets", "dung von bo snippets", "dung co bo snippets", "dung can bo snippets", "dung con co snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java caicode snippets") or ("dung con bo snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java caicode snippets") OR ("dung con bo snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java caicode snippets ) or ( dung con bo snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java caicode snippets") or ("dung con bo snippets"))) or ("locating bug core snippets"))*.